TY  - BOOK
AU  - Lietman, Patricia L.
TI  - Evaluation of agricultural best-management practices in the Conestoga River Headwaters, Pennsylvania : a summary report, 1982-90 by Patricia L. Lietman
SN  - 0607868120
PY  - 1997///
CY  - [Washington, D.C.] : U.S. G.P.O. ; Denver, CO : For sale by the U.S. Geological Survey, Branch of Information Services
KW  - Agricultural chemicals--Environmental aspects--Pennsylvania--Conestoga River Watershed
KW  - Rocks, Carbonate--Pennsylvania--Conestoga River Watershed
KW  - Water quality management--Pennsylvania--Conestoga River Watershed
KW  - Water quality--Pennsylvania--Conestoga River Watershed
ER  -